Mean beam length various geometries

Table 9.7. Mean beam lengths for various geometries 54 ...

Meadowcroft, D. B. 759,786 Mean beam length 466,468 ---------various geometries 468... 

For a black differential receiving surface area dA located in the center of the base of a hemisphere of radius L containing a radiating gas, the mean beam length is L. The mean beam length has been evaluated for various geometries and is given in Table 4.11-1. For other shapes, L can be approximated by... 

---